worsley



(No Model.) 2 Sheets-Sheet 1. S. L. WORSLEY.

WIRE FEEDING MECHANISM.

No. 320,523. Patented June 23, 1885.

N. PETERS, Phalo-Lithbgnphur, Wahlnllon. D. C.

ME N (No Model.) 2 Sheets Sh eet 2.

s. L. WORSLEY.

' WIRE FEEDING MECHANISM. N0. 320,523. Patented June 23, 1885.

f s m N. PETERS, Photo-Uihognpher, Washington, D. c.

PATENT OFFIC SAMUEL L. \VORSLEY, OF TAUNTON,

MASS, ASSIGNOR TO THE BROWN &

SHARPE MANUFAOTURING OOMPANY, OF PROVIDENCE, R. I.

WIRE-FEEDING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 320,523, dated June 23,1885.

Application filed April 10, 1885. (No model.)

To all whom it may concern.-

Beit known that I, SAMUEL L. WonsLEY, a citizen of the United States,residing in Taunton, in the county of Bristol and State ofMassachusetts, have invented an Improvement in W'ire Feeding Mechanismsand Chucks, of which the following description, in connection with theaccompanying drawings, is a specification, like letters on the drawingsto representing like parts. V

This invention is an improvement in wirefeeding mechanism, and chucksfor feeding wire in screw and other machines.

Heretofore in wire-feeding mechanism and r 5 chucks for feeding wire inmachines, more especially in screw-machines, the wire has been fed tostop or other device specially employed to limit the feed of the wire,said stop having been located in the turret. In such feeding 2omechanism it is required to feed the wire a greater length than isactually needed, so as to positively bring the end of the wire againstthe stop in the turret, and in so doing the feeding mechanism is causedto slip or 2 5 move on the wire to the extent of such, excess of feed.This results in considerable wear of parts, and makes the stop in theturret an essential feature of such machines. Further, the turret isrequired to be moved forward 3 and back, and then partially rotated, tobring, .first, the stop into required relation with the chuck, and,second, the first tool into position .to act 011 the wire. It isdesirable that the turret be furnished with a number .of tools, andoftentimes it is found that it cannot carry as many as are required incertain classes of work. I11 such machines the stop is as important anelement and occupies as much space in the turret as any one of the toolsem- 4 ployed therewith, as well as requiring as much time and as manymovements in its adjustment.

The object of this my invention is to dispense with all stop mechanismwhatever, to

permit the turret to carry more tools, and to enable the wire to be fedpositively the desired length, and, further, to provide for ad justnientof the feed mechanism, so as to readily obtain increased or diminishedfeed of the 5 wire.

' To these ends my invention consists, primarily, of a chuck, and achuck opening and closing mechanism, and a wire-feeding tube independentof the chuck, and tube-operating mechanism, combined with a cammed diskhaving a wrist pin operatively connected therewith, and intermediatemechanism conmeeting the disk with the chuck and tube op eratingmechanisms, whereby,through the action of said disk, the chuck is openedand closed, and the wire-feeding tube carried forward and back to feedthe wire.

My invention further consists of a wire-feeding tube and tube-operatingmechanism,combined with a cam provided with an adjustable stud orwrist-pin and a rod connecting the stud or wrist-pin with thetube-operating mechanism, whereby motion of the cam .is conveyed to thewire-feeding tube to obtain greater or less reciprocating movementthereof, and thereby secure a longer or shorter feed of the wire.

My invention further consists of certain dc tails of construction, whichare fully set forth in the following description, and are particularlypointed out in the claims.

Figure 1 is a side elevation,partly in longitudinal vertical section, ofa portion of a wirefeeding mechanism and chuck sufficient to illustratemy invention; Fig. 2, a top viewof the cam and its operative parts,partly in section, the lever z',to be referred to,with its shaft orjournal, being removed from its proper position (shown in Fig. l) tomore fullyillustrate the same; Fig. 3, a rear end View. Figs. 4, 5, and7 are details of the disk or cam; Fig. 6, details of the lever-operatingcams of the chuck. Fig; 8 shows in front and side elevation the pivotfor the levers which operate the jaws of the chuck; Fig. 9, alongitudinal vertical section of the chuck, and Fig. 10 a front view ofthe chuck with the end plate removed.

The bed A, standards a of, bearings a, hpllow spindle B, and thewirefeeding tube 0, having the bifurcated or spring jaws c, andsupported by the spindle, are and may be of usual or preferredconstruction.

Thewire is passedinto thetubeQand through the spring-jaws thereof, andthrough the jaws d 100 of the chuck D,whieh is secured to the forwardend of the spindle B. The jaws d are retained in sockets in thejaw-holders d, which are capable of movement in the body ofthe chuck atright angles to the wire, so that the faces of said jaws are alwaysmaintained in lines parallel with the longitudinal axis orline ofmovement V front of the chuck, so that said jaw-holders have a positivemovement in the chuck, whether moved toward or from the bore thereof.The jaws are opened or moved from one another by the action of thespring (1 which rests in mortises in said jaws and below the faces ofsame, as shown in Figs. 9 and 10. On the other hand the jaws are broughtnearer together to grip the wire through the levers e, (seeFigs. 1 and9,) having socket-bearings e in the jaw-holders (1, while they arefulcrumed or have their axes of movement on the pivots e of the hollowset-screws f, which may be adjusted to limit the movement of thejawholders and attached jaws, to increase or diminish the grip orholding-power of said j aws, and also to enable them to be trued without being removed from the chuck.

The faces e (see Fig. 8) of the pivots e are screw f, to provide thenecessary strength of parts, and transfer the strain from the head ofthescrew to the body thereof when screwed into the chuck D.

The rear or free ends of the levers 6 project into the cams g, which arepivoted to the chuck-body by the pins 2, and extend outward therefrom toenter recesses in the sleeve G,between the bearing-points 6 and 7, thelatter point forming part of a removable plug, 8, which is retained insaid sleeve by aset-screw passing through a portion of the sleeve andentering the plug, as clearly shown inFig. 9.

The sleeve G slides on the chuck-body, and is operated by means of theforked block h, entering the groove 3 of said sleeve and sliding on thestud h, secured in the standard a", the said block being in turnoperated by the lever i, pivoted to the bed A, one end of said leverbeing mortised at 4 in the forked block, while the other end is attachedto the connecting slide-rod-k. This slide-rod has an opening, m, (shownin Fig. 2, and in dot-ted lines, Fig. 1,) which permits it to encircleor slide on the-hub of the hanger 10, that supports the stud m of thehand-wheel M and disk or cam N, the end of the said connecting-rodreceiving a roll, n, working in the cam-groove a in one side or face ofthe cam N. The other face of the cam is provided with a slide-block,

0, (seeFig. 7,) adapted to be moved in the ways 0, and working on theadjusting-screw 0, which is free'to be rotated in said ways, but isprevented from longitudinal movement therein by means of the collars0,formed thereon, and abutting portions of the ways, the said adjusting-screw being retained in place by the cup-piece p and screws 19,as shown in Fig. 5.

An abutting-surface is provided in the ways for one of the'collars o bymeans of the slot 1)".

The slide-block 0 has a screw-stud, a, a sleeve, 1*, and washer 1",which forms awr1st pin to receive one end of a connecting-rod, 8, whoseother end is loosely connected by the slot 8 and pin 3 with asegment-lever, S, pivoted to an extension, A, of the bed A, and havingthe toothed segment i. This segment engages a rack-bar, t, sliding inthe extension A, as shown, and having a forked block, t fastened theretowith screws 12, said forked block projecting between and engaging thecollars c on the rear end of the wire-feeding tube 0, so that uponmotion of the segmentlever S, induced by the cam N, the rack-bar isreciprocated in the extension A, and the tube '0 moved in the spindle Btoward or from the chuck. Upon turning the adjusting-screw 0 of the disk'N the block 0 will be moved toward or from the axis of the disk, so asto increase or diminish its throw, and thereby obtain greater or lessreciprocating movement of the tube 0, to feed the wire in longer orshorter lengths, as desired. After the screw 0 has been adjusted, thescrew-stud r is tightened to bind the sleeve 1" against theface of theways 0, to more securely hold the parts in adjusted position.

The outside sleeve, 10, of the chuck incloses and protects thejaw-operating mechanism from injury, dust, &c.

In Fig. l of the drawings, the chuck mechanism is shown in the positionwhen the jaws grasp the wire, while the wire-feeding tube 0 is inwithdrawn or retracted position. Upon turning the hand-wheel M in thedirection of the arrow theforked block 71, through the action of thecam-groove a of the cam N, the connecting-rod 7c, and lever i, will movethe sleeve G forward on the body of the chuck, thereby throwing thepivoted cams 9 forward, when the levers Q can be moved on the pivots cand the jaws forced apart to release the wire by the action of thespring d"; In the meantime-that is to say, while the jaws are beingwithdrawn from the wire to release same-the action of the double cam isnot exthe latter, the springjaws c of the tube grasping the wire withsufficient force for that purpose.

hand-wheel causes the chuck to again grasp The'completion of onerotation of the the wire, and the tube 0 to slip over said wire and bereturned to its former position.

What I claim is- 1. The combination, witha chuck and chuck opening andclosing mechanism, and a wirefeeding tube and tubeoperating mechanism,of a cam having a wrist-pin operatively connected therewith, and rodsconnecting the cam with the chuck opening and closing mechanism, and thewrist -pin with the tubeoperating mechanism, as and for the purposedescribed.

2. The combination, witha chuck and chuck opening and closing mechanism,and a wirefeeding tube and tube-operating mechanism, of a cam providedwith a wrist-pin adapted to be moved toward or from the axis of the cam,and rods for connecting the chuck opening and closing mechanism with onepart of the cam, and the tube-operating mechanism with the wrist-pin, asand for the purpose set forth.

3. In wire-feeding mechanism, a wire-feeding tube and tube-operatingmechanism, combined with a cam provided with an adjustable w] ist-pin,adapted to be moved toward or from the axis of the cam, and means forconnecting the wrist-pin with the tube-operating mechan ism, for thepurpose specified.

4. The combination, with a chuck and chuck opening and closingmechanism, and a wirefeeding tube and tube-operating mechanism, of a camhaving a wrist-pin operatively con nected therewith, means forpositively connecting the chuck opening and closing mechanism with thecam, and a rod attached to the wrist-pin and loosely connected with thetubeoperating mechanism, to permit lost motion between said cam and thetube-operating mechanism, as set forth.

5. The combination, in a chuck, of a chuckbody provided with a sleeveand with movable jaw-holders having jaws, of cams g, pivoted to thechuck body and extending into the sleeve, and jaw-operating levers, theends of which engage thejaw-holders and cams, and having their fulcrabetween said ends, as and for the purpose described.

6. The combination, with the jaw holders having jaws and thejaw-operating levers, of the hollow screws f, provided with pivots, forthe purposes specified.

7. The combination, with a wire feeding tube and tube-operatingmechanism, of a cam provided with a slide-block having attached stud,and an adj usting-screw to move the slideblock toward or from the axisof the cam, and a rod connecting the stud with the tubeoperatingmechanism, substantially as set forth.

8. The combination, with a cam-wheel and a wire-feeding tube, of a slideengaging the tube and provided with a rack-bar, a lever having a toothedsegment, and a rod connecting the lever with the cam-wheel, for thepurpose specified.

In testimony whereof I have signed my name to this specification in thepresence of two sub scribing witnesses.

SAMUEL L. KVORSLEY.

Vitnesses:

HOWARD GREENE, J AS. H. LANGE.

